drummerdaking

Hey guys, Middle School Band director here trying to get the best tone for my jazz band. I am fairly ignorant when it comes to guitars and amps. My school owns a Line 6 Amplify75. Student has a hollow body epiphone but I cannot seem to find the settings to get a nice clean tone from the guitar....everything sounds way too distorted. At times I can find the higher strings have a decent tone but when I play lower strings, it still has a bad sound. I am searching for the cleanest tone possible...any help would be much appreciated. Thanks,